US3232952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Di-(oxazolidinone-(4)-n-alkyl)-ethers
Assignee: Chemische Fabrik Kalk GmbH
•
Filing: 1963-09-20
•
Granted: 1966-02-01
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Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Seeliger Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:20
CPC Classifications
C; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/16; C07D263/18; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |